An all weather outdoor shower is easily done by locating the mixing valve inside the house and use a coupling shaft to locate the handle on the outside. You must use a standard tub type lower faucet (with the pull up to activate the shower) to allow the system to drain out when the shower is done. You also have to make sure everything slopes in direction of the water flow. We live in Bancroft Ontario so winters are well below freezing and we have been showering outside for 3 winters. Only issue we have is the shower head will freeze so we typically remove it after a shower or shower without it on when really cold. The system has worked well and it helps that nothing special needs to be done by anyone. no inside valves to close etc. Just turn off tap and everything drains.

It all depends on what you want to do in your laundry and what in your bathroom I guess. I appreciate the fact that there might not be enough space to do this but I store outdoor shoes in the laundry and the dog's leash and cleaning stuff. I need room to sort the dirty laundry into piles before washing it. I keep the ironing board in there and I need a tub to wash things in and to do flowers in and to put the odd cloth that wiped up the cat sick before it gets rinsed and washed.. heaps of things other than just washing. Couldn't manage with a cupboard laundry ( piles of washing on the hall floor when using it) and think these kinds of laundry functions might not make a gorgeous lavendery bath or shower feel that luxurious. So I am for as big a laundry with tubs, cupboard and bench nearest the outside back entrance and yes washing line as poss. And a lovely fresh warm bathroom near the bedroom separate from the dirty clothes and boots and all that other stuff.

my fiance & i are building a new home & we'd like some practical inspiration with designing master ensuite. the size of the room is 2.8m x 5.2, it is separate from the walk in wardrobe no need to worry about steam etc entering it. we'd like a minimalistic but functional bathroom, it will has a main window facing north / east side of the room. thought about a cavity door entering the room, would like the toilet hidden from view if the other person is lying on bed. wishlist to consider: dual shower heads, with only one of them that has a rain shower head dual basin on one vanity with mirror above one toilet shower a walk in similar to the photo i've included that was found on houzz glass to prevent water all over the floors heated towel rail, similar to the individual bars in the photo

If you can narrow the linen cupboard, then you do do a similar layout to that GB has shown but with a changed door swing, swap the basin and WC, putting the WC on the wall beside the door so the WC is concealed behind the door.